Document Type

Grant

Publication Date

4-9-2002

Publisher

University of Nevada, Las Vegas. Department of Mechanical Engineering.

Publisher Location

Las Vegas (Nev.)

First page number:

1

Last page number:

30

Abstract

Niobium cavities are important parts of the integrated NC/SC high-power linacs. Over the years, researchers in several countries have tested various cavity shapes. They concluded that elliptically shaped cells are the most appropriate shape for superconducting cavities. The need for very clean surfaces led to the use of a buffered chemical polishing procedure for surface cleaning to get good performance of the cavities. This proposal discusses the second phase of research in the second year of the project.

The first phase (starting Summer 2001) has resulted in improving the basic understanding of multipacting and the process of chemical etching. Based on our conclusions so far, as well as our interaction with personnel of Los Alamos National Laboratory (LANL), we propose to focus on the following topics in the second phase of this project:

1. Continue optimizing the cavity shape to reduce or minimize the possibilities of multipacting.

2. Redesign the etching process to maximize surface uniformity.

3. Experimental study of multipacting conditions.

4. Experimental study of the etching process and the resulting quality of the surface.

Keywords

Elliptical cells; Holes; Linear accelerators; Niobium cavities; Niobium – Surfaces; Radio frequency; Resonant radio frequency; Surfaces (Technology); Superconducting radio frequency; Superconductivity

Controlled Subject

Linear accelerators; Radio frequency; Superconductivity

Disciplines

Electrical and Computer Engineering | Mechanical Engineering | Metallurgy | Nuclear Engineering

File Format

pdf

File Size

779 KB

Language

English

Rights

IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

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